Lenovo ThinkSystem Mellanox ConnectX‑4 Lx 10/25 GbE SFP28 2‑Port ML2 Ethernet Adapter (PN 7ZT7A00507 / 00YK369)
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Lenovo ThinkSystem Mellanox ConnectX‑4 Lx 10/25 GbE SFP28 2‑Port ML2 Ethernet Adapter (PN 7ZT7A00507 / 00YK369)
Keywords
7ZT7A00507, 00YK369, Mellanox ConnectX‑4 Lx, 10/25GbE SFP28 adapter, ThinkSystem ML2 Ethernet Adapter, RoCE Ethernet card, PCIe 3.0 x8 network card
Description
The 7ZT7A00507 (ML2 variant) and 00YK369 are official Lenovo versions of the **Mellanox ConnectX‑4 Lx 10/25 GbE SFP28 2‑Port Ethernet Adapter**, designed for high-performance networking in ThinkSystem and Flex Family servers. Built on Mellanox’s robust ConnectX‑4 Lx platform, these adapters provide ultra-low latency, RDMA over Converged Ethernet (RoCE) support, and advanced virtualization offloads like SR‑IOV and hardware-based QoS .
Lenovo ServerProven certified for ML2 slot compatibility in ThinkSystem models like SR630 V2, SR650 V2, SR655, SR635, and others, they deliver future-ready networking with 10/25 GbE speeds and full support for flow acceleration and jumbo frames (up to 9.6 KB) .
Available new with 1-year Lenovo warranty or refurbished with cost-effective pricing, these cards offer excellent value for virtualization, storage clusters, HPC, and AI/ML deployments in enterprise data centers.
Key Features
- Dual 10/25 GbE SFP28 ports via PCIe 3.0 x8 ML2 form factor
- RDMA support with RoCE, low latency, and Converged Ethernet compatibility
- Advanced virtualization offloads: SR‑IOV, hardware QoS, flow control, link aggregation
- Jumbo-frame support up to 9.6 KB, ideal for storage and HPC networks
- ServerProven certification for ThinkSystem slots and multiple OS platforms
- Available new (Lenovo warranty) or refurbished (budget pricing) options with ML2 compatibility
Configuration
Attribute | Specification |
---|---|
Part Numbers | 7ZT7A00507 (ML2), 00YK369 (ML2) |
Adapter | Mellanox ConnectX‑4 Lx Dual‑Port 10/25 GbE |
Interface | PCIe 3.0 x8 via ML2 slot |
Ports | 2 × SFP28 (optical or DAC) |
RoCE Support | Yes – RoCE & RoCE v2 |
Virtualization | SR‑IOV, NIC partitioning, Flow acceleration |
Form Factor | ML2 mezzanine card |
Warranty | 1 year (Lenovo or reseller) |
Compatibility
ServerProven certified for ThinkSystem ML2 slots across SR630/650/655/635/665 and Flex systems . Supports Windows, Linux distributions, VMware vSphere, and more.
SFP28 ports support both optical and DAC cables; capable of auto-negotiating between 10/25 GbE links and suitable for converged network fabrics.
Usage Scenarios
Perfect for virtualization clusters where hardware offloads reduce CPU overhead and RoCE enables fast storage networking.
Well-suited for HPC, analytics, and AI workloads requiring ultra-low latency and high-throughput connectivity.
Ideal for future-proofing data centers—supports both current 10 GbE networks and upcoming 25 GbE deployments while retaining backward compatibility.
Frequently Asked Questions
- Q: Does this adapter support RoCE?
A: Yes—ConnectX‑4 Lx supports both RoCE and RoCE v2 for low-latency RDMA over Ethernet . - Q: Which ThinkSystem servers support ML2 cards?
A: Certified for ML2 slots in SR630, SR650, SR635, SR655, and Flex chassis series . - Q: Can it run at 10 GbE?
A: Yes—it auto-negotiates between 10 GbE and 25 GbE depending on your network switch. - Q: Is it available refurbished?
A: Yes—models like 00YK369 are available renovated with ML2 compatibility and 1-year reseller warranties.
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